BROADCASTING & APPLIED ACOUSTICS...

BROADCASTING & APPLIED ACOUSTICS

LABORATORY

ECE126L

APRIL, 2012

ECE 126L / section Name (SN, GN, MI) Student Number Latest weighted average Did you take this course previously? (Y/N) Units this term Cell # Email address (valid and professional) Signature & Date Today

(schedule at the back)

Term Activities 1.  Sound Measurement 2.  AM Broadcast Station Coverage Mapping 3.  AM Broadcast Station Frequency Study 4.  FM/TV Broadcast Station Coverage

Mapping 5.  FM/TV Broadcast Station Frequency

Study 6.  Cable Television Trunk System Design 7.  Cable Television Distribution System

Design 8.  Television Raster and Synchronizing

Signals 9.  Design Prototype

Week Sat Activity Exam Coverage Submissions

1 Oct  13   Expt 1

2 Oct  20   Expt 2 Expt A (Expt 1) Expt 1

3 Oct  27   Expt 3 Expt B (Expt 2) Expt 2

4 Nov  3   Expt 4 & 5 Expt C (Expt 3) Expt 3

5 Nov  10   Expt 6 Expt D (Expt 4/5) Expt 4

6 Nov  17   Expt 7 Expt E (Expt 6) Expt 5

7 Nov  24   Expt 8

8 Dec  1  Review of Design / Makeup

Expt F Expt 8

9 Dec  8   Review of Design Prototype

10 Dec  15   Finals (All Expts) Expt 6 & 7

11 Dec  19   Submission Of Grades

COURSE POLICIES

•  Formats, directions and instructions are generally given for the specific purpose of being followed. It is rather pointless to give out instructions if the student would insist on doing his/her own way in accomplishing set tasks

COURSE POLICIES •  Each weekly meeting, a short 20

minute exam covering the activity and discussions done in the previous week shall be given starting at 7:45 AM / 12:15 PM. Small examination booklet is required for each exam

•  No make up exam shall be given. The score for the missed exam shall be taken from Final Exam score.

GROUP NO.

____________________ ____________________

DATE

________QUESTION_______ ________________________

________Answer_______ ________________________

COURSE POLICIES

•  Refrain from using clips in the reports to be submitted.

•  The reports should be free from exposed / sharp staple wires

•  An automatic grade of 60 shall be given to reports that contain inverted / extraneous pages.

•  Engineering lettering is required for Experiments 1 & 8 only

Grading System

Experiments: 5% x 8 = 40% Weekly Exams 3.75% x 6 = 22.5% Final Exam: 7.5% Prototype: 30% Total: 100%

Passing rate is 70% (EEC mandated)

Grading Template issued by DOIT

GROUPINGS

5 persons to a group Each group to select 1 AM, 1 FM and 1 TV

station to be studied (Expts 2 to 5)

SELECT YOUR PEFERRED SET

AM FM TV GROUP

A DZUP 89.1 Ch13

B DZAS 93.1 Ch21

C DZRV 105.9 Ch29

D DZIQ 104.3 Ch4

E DWWW 105.1 Ch9

F DZRB 88.3 Ch11

G DZXL 96.3 Ch37

SELECT YOUR PEFERRED SET

AM FM TV GROUP

A DZUP 89.1 Ch13

B DZAS 93.1 Ch21

C DZRV 105.9 Ch29

D DZIQ 104.3 Ch4

E DWWW 105.1 Ch9

F DZRB 88.3 Ch11

G DZXL 96.3 Ch37

SELECT YOUR PEFERRED SET

AM FM TV GROUP

A DZUP 89.1 Ch13

B DZAS 93.1 Ch21

C DZRV 105.9 Ch29

D DZIQ 104.3 Ch4

E DWWW 105.1 Ch9

F DZRB 88.3 Ch11

G DZXL 96.3 Ch37

DWIZ 92.3 Ch7

DZEC 95.5 Ch25

Station Parameters to Obtain

•  AM (Expt 2 & 3) – Frequency, Power, Callsign , TX location

•  FM & TV (Expt 4 & 5) – Frequency, Power, Callsign , TX location – Antenna height from ground level (Inclusive of

tower and building height) – Antenna Type, Transmission Line Type

Standard Individual Report Format (Expts. 1 & 8)

•  Cover Page •  Detached pages from the manual with

answers •  Graphs (Ex. 1) / Waveform pix (Ex. 8) •  Interpretation of results / Remarks •  Conclusions

•  Photocopy of PDS (Ex. 1)

PROTOTYPE PROJECT

AM Receiver FM Transmitter FM Receiver TV Modulator

PROTOTYPE PROJECT •  Construct an FM receiver (Mono or Stereo) •  In lieu of a speaker(s) modify the output to

accommodate a stereo jack for common stereo plugs for powered speakers

•  Battery powered (not more than 9 volts) •  Circuit board modification to segregate sections

–  RF / Tuner Section (original coil orientation must be followed) –  Demodulator / Detector Section –  AF Section –  Names of members must be etched on board

•  Antenna and tuner knob must be firmly attached to the transparent housing

•  Must be fully operational

FM Rx Evaluation

•  Receiver must be capable of receiving at least 3 distinct FM stations preferably Love Radio, Yes FM and Win Radio

•  General reception quality must be clear with minimal hiss

•  Must be able to receive DZJR 88.7 MHz clearly

Prototype Write-up Format

•  Technical Background / Discussion of technical principles involved

•  Schematic Diagram •  List of components used •  Original Foil Pattern •  Revised Foil Pattern •  Prototype photos

FM Rx Evaluation

•  Write-up 30% •  Reception quality 30% •  3 Stations received 15% •  Circuit board segregation 10% •  Antenna / Tuning Knob mounting 5% •  Switch / Battery Mounting 5% •  Speaker Jack 5%

Stereo Jack / Plug

MANUAL

Ex. 1 SOUND MEASUREMENT

Sound Measurement Locations

A.  Gym B.  Mapua Bust C.  Pavillion D.  Library E.  Chapel

Freq Network A B C

100 Hz 250 Hz 500 Hz

1000 Hz 2000 Hz 4000 Hz 8000 Hz

15000 Hz